Planoqrapii co



P. G. BRUNZEL.

PROPELLING MECHANISM.

APPLICATION FILED SEPT. 10. l9l8.

' 1,3 1 2,679; Patented Aug. 12, 1919.

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PAUL G. BRUNZEL, F YORK, N. Y.

PROPELLING MECHANISM.

Specification of Letters Patent.

PatentedA-ug. 12, 1919.

Application filed Se tember 10, 191's. serienvo. 253,392.

To all whom it may concern:

Be it known that 1, PAUL Gr. BRUNZEL, acitizen of the United States, and residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Propelling Mechanisms, of which the following 4 1s a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to mechanisms for propelling row boats, canoes, motor boats and the like, and the object of the invention is to provide an apparatusof this class which is adapted to be manually operated and controlled; a further object being to so mount the apparatusin connection with the boat as to permit of the movement thereof into and out of the water or into operative and inoperative positions; and a still further object being to provide a propelling mechanism of the class and for the purpose specified which is simple in construetion and operation and eflicient in use; and with" these and other objects inview the invention consistsinan apparatus of the class and for the purpose specified, constructed and operating as hereinafter described and claimed.

The invention is fully disclosed in" the following specification, of which the accompanying drawing forms a part, in which the separate parts of my'improvemen't" are designated by suitable reference characters in each of'the views,- and in which-:-

Figure 1 is a sectional side view of the rear end ofa boat showing my improvement applied thereto andin position foruse';

Fig. 2a plan view of the construction as shown in Fig.1;

Fig. 3 a partial= section on the line 33 of Fig. 1 and on an enlarged scale;

Fig. 45 a diagrammatic view illustrating four different positions of the propeller memberemployed during one complete revolution thereof;

Fig. 5 a view similar to Fig. 2 but showing two propeller members mounted in the rear end portion-of a'boat;

Fig. 6 a view looking in the direction ofthe'arrow 6 of Fig.5 with part of the construction br'oken away} and, I

Fig. 7 a view similar to Figs. 2 and 3 but showing a modified form of gearing which 'I employ.

In the practice of my invention, as shown in Figs. 1 5'04 inclusive, I'hingje-to the back 10of aboat 11 as shown at 12a backwardly directed bracket plate 13, which is adapted to swing inwardly into the boat on the hinge 12.

The bracket plate 13 is provided adjacent to its" free endwith an aperture 14 through which passes a sleeve 15' to the upper end of which is secured a crank 16. The crank 16 and sleeve 15 are held against vertical movement in the plate 1 3 by a collar 17 secured to said sleeve below said plate.

A bent shaft 18 is rotatably mounted in the sleeve 15 and provided at its lower end with an offset portion 19 upon which is rotatably mounted a sleeve 20, the upper end of which is connected with the sleeve 15 througha universal joint construction 21, comprising yoke-shaped head members 22 and 23 mounted on' the adjacent ends of the sleeves 15 and respectively, which head members are pivoted to an annular ring 2 1 mounted on the shaft 18 where it is bent as shown at 25 in Fig'.' f the drawing.

To the lower'end portion of the sleeve 20 issecured the shank 2,6of a propeller member 27 having a blade or head portion 28, as shown in Fig. 1' of the drawing.

Secured to the upperend of the shaft 18 above the crank 16, as shown at 29, is a gear 30and' another gear 31 is rotatably mounted in the free end portion of the crank 16 and a lever 32 is pivoted to a stud 38 on the top ofthe gear 31 as-shown at 34, and

said lever is alsoprovidedwith a hand piece 35, whereby the same may be manipulated to rotate the crank 16 as will be readily understood.

From the foregoing description, the operation will-be readily understood when taken in connection-with the accompanying drawing and the following statement. When the crank 16, lever 32 and propeller member 27 are iii the position shown" in Figs; 1 and 2, and it should be desired to propel the boat 11 forwardly, or in the direction of the arrow m of Fig. 4, this is accomplished by pushingbackwardly upon the lever 32 to rotate the'crank- 16 in the direction of the arrow m of Fig. 4:, and after moving said crank one-eighth of a revolution, or from Y theposition indicated at 2 Fig. 4, to that indicated at g in dotted lines in said figure, the blade 28 of the propeller member 27 will move from the position shown at m in Fig. 4 to that shown at m in said figure and will also be rotated by the gears 30-31 to change the position thereof, as illustrated in said figure. When the crank has made onequarter of a revolution or brought into the position shown at y in Fig. 4:, the blade 28 will assume the position shown at m in said figure, and when the crank reaches the position shown at y the blade will assume the position shown at w and when a complete half revolution, or when the crank is in the position shown at y', the blade 28 will again assume the position shown at m in Fig. 4:.

In short, at each complete revolution of the crank 16, the propeller member 27 of the blade 28 thereof will make two complete revolutions and be oscillated in each of such revolutions in such manner that during the backward stroke, or the stroke from the position shown at m to that shown at w, or the power stroke, the face of the blade 28 will have its full area against the body of water to produce the greatest possible power, but in the forward stroke of said propeller member, or the stroke of the blade from the position shown at w to that shown at 00 said blade will cut through the water and have no retarding or dragging action.

The above operation of oscillating the propeller member during its revolutions is produced by the combined action of the gears 30 and 31 and the rotation of the crank 16 by the lever 32 as is also the rotary movement of the propeller member 27.

The lever 32 as shown in Figs. 1 and 2 of the drawing is designed to be manipulated forwardly and backwardly by a single operator, but it will be understood that by elongating or extending the lever 32, as indicated in dotted lines in Fig. 1, and providing other hand pieces 36 for said lever, a plurality of persons may manipulate said lever to operate the propeller member 27.

In Figs. 5 and 6 of the drawing, I have shown two of my propeller mechanisms mounted at the rear end of the boat 11, said mechanisms being precisely the same as that shown in Figs. 1 to 4 inclusive, but instead of mounting the same in connection with the plate 13 they are connected with the free end of the levers 37, pivoted to the sides of the boat 11 as shown at 38 and the rear ends 39 of which are held against upward movement by a keeper 40 clearly shown in Fig. 6. WVith the lever mounting for the propelling mechanisms as shown inFigs. 5 and 6, the same may be swung upwardly to bring the propeller member 27 out of engagement with the water whenever desired.

Both of the propeller mechanisms may be controlled by a single operator by grasping the hand pieces 35 of the levers 32 in each hand and moving said levers forwardly and backwardly alternately, or said levers may be extended and a number of hand pieces connected therewith, whereby two or more operators may control or manipulate each of said propeller mechanisms.

In Fig. 7 of the drawing, I have shown a modified form of gear construction which is substituted for the gears 30 and 31 and consists in providing elliptical gears 41 and 42, the gear 41 being substituted for the gear 30, while the gear 42 is substituted for the gear 31 and the function of these gears is to increase the power at which the propeller member 27, or the blade 28 thereof is driven during the power stroke, or in the movement of the propeller member 27 from the position shown at 00 to that shown at w in Fig. 4.

From the foregoing it will be noted that the principle of my invention resides in the provision of a propeller member which is preferably mounted to be swung into and out of cooperation with the water and is provided with means whereby it may be rotated as well as oscillated in its rotary movement, and further with means for rotating the propeller member at a greater number of revolutions than the element which drives the same, and while I have shown certain details of construction for carrying my invention into effect, it will be understood that various changes in and modifications of these details of construction may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A propelling mechanism of the class-1%" described, comprising a propeller member, means for rotating said member, and means for giving said member a rotary oscillatory movement when rotated.

2. A propelling mechanism of the class described, comprising a propeller member, a crank connected with said propeller member by means of a universal joint whereby said propeller member may be rotated, and means for oscillating said propeller member when rotated by said crank.

3. A propelling mechanism of the class described, comprising a propeller member, a crank connected with said propeller member by means of a universal joint, means for operating said crank to rotate said propeller member, and means for oscillating said propeller member in the rotation thereof.

4. A propelling mechanism'of the class described, comprising a propeller member, a crank connected with said propeller member by means of a universal joint, means for operating said crank to rotate said propeller member, and means for oscillating said propeller member in the rotation thereof, whereby the propeller member will be rotated at a greater number of revolutions than sald crank.

5. A propelling mechanism of the class described, comprising a propeller member, a crank, means for universally connecting said crank to said propeller member, a bent shaft mounted Within said last named means, a gear secured to one end of said shaft, another gear mounted on the free end portion of the crank and in operative connection with said first named gear, and means for operating the crank to rotate said propeller member and to oscillate it in such rotary movement.

6. A propelling mechanism for boats, comprising a propeller member, a crank, means for universally connecting said crank to said propeller member, a bent shaft mounted Within said last named means, a gear secured to one end of said shaft, another gear mounted on the free end portion of the crank and in operative connection With said first named gear, means for operating the crank to rotate said propeller member and to oscillate it in said rotary movement, and means for movably supporting said mechanism in connection with a boat.

7. A propeller mechanism of the class described comprising a movable supporting member, a shaft rotatably mounted in said member, a propeller member movably mounted on said shaft, and means for operating said propeller member and said shaft togive said propeller member a rotary and oscillatory movement.

8. A propeller mechanism of the class described, comprising a support, a propeller member rotatably mounted in said support, and means involving a gear construction for rotating said propeller member at a greater speed than said means and for oscillating said propeller member in the rotation thereof.

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing Witnesses this 7th day of Sept. 1918.

PAUL Gr. BRUNZEL.

Witnesses:

C. E. MULREANY, H. E. TnoMrsoim,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0. 

